A number of unexplained military deaths hit Italy and are ruled to be accidental or suicides, but police inspector Giorgio Solmi suspects otherwise. When a mysterious wealthy electrician is seemingly murdered by a female escort, a sinister plot slowly begins to unravel.

Ralf Milan, a hitman, arrives in Montpellier to kill an important witness. He checks in a hotel without knowing that his neighbour has become neurotic after his wife left him.